Mini Caliper-Keychain

Mini Caliper, can be used both as a keychain or without a chain by inserting the pin. If the moving part is a little hard, go back and forth a few times to unblock it. This is the link for the chain that i used:https://www.amazon.it/dp/B08L7PWSGZ?psc=1&ref=ppx_yo2ov_dt_b_product_details